Post 1321338 by clacke@libranet.de
 (DIR) More posts by clacke@libranet.de
 (DIR) Post #1319983 by veer66@toot.veer66.rocks
       2018-11-19T12:15:18.488958Z
       
       1 likes, 0 repeats
       
       That's all?"At the end of the day, private blockchains provide higher levels of error checking and transaction validity than regular shared databases."https://medium.com/blockchain-review/private-blockchain-or-database-whats-the-difference-523e7d42edc
       
 (DIR) Post #1321338 by clacke@libranet.de
       2018-11-19T12:58:17Z
       
       1 likes, 1 repeats
       
       > Private blockchains mimic the security process utilized by public blockchains like Bitcoin, but do not involve mathematical guarantees at the validation level or with respect to irreversibility.I wonder if this is true across the board, and to what extent.> These consensus protocols work based on a leader-follower model, wherein for each block a leader is selected who creates the block and adds to the blockchain. There are various ways in which errors and anomalies are then corrected by the system.Public (D)PoS blockchains like Tezos and Cardano do this as well.(or Cardano will, when decentralizarion will kick in, in 2019Q1 or so)There are some flow diagrams out there that are genuinely useful (not just "Do you need a blockchain?" -> "Probably not."), and what it comes down to is who needs to read, who needs to write, and who do you trust.One fully trusted entity -> RDBMS, key value store or graph database; Fully untrusted, possibly unknown, participants -> public blockchain; Sliding scale of trust, known but diverse and not fully trusted participants, probably competitors -> some manner of private blockchain.
       
 (DIR) Post #1336086 by nbering@mastodon.xyz
       2018-11-19T23:23:40Z
       
       1 likes, 1 repeats
       
       @veer66 Yup. This is why the blockchain hype is so ridiculous. Yes, in some situations it is an improvement over just having a regular database. But it’s not really _that_ revolutionary. You could achieve similar guarantees on a small scale just by digitally signing an audit log entries.